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參數資料
| 型號： | LP5550SQ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | PowerWise Technology Compliant Energy Management Unit |
| 中文描述： | 0.75 A SWITCHING REGULATOR, 1360 kHz SWITCHING FREQ-MAX, QCC16 |
| 封裝： | LLP-16 |
| 文件頁數： | 1/25頁 |
| 文件大小： | 1056K |
| 代理商： | LP5550SQ |
LP5550
PowerWise
Technology Compliant Energy
Management Unit
General Description
The LP5550 is a PWI 1.0 compliant Energy Management
System for reducing power consumption of stand-alone mo-
bile phone processors such as base-band or applications
processors.
The LP5550 contains an advanced, digitally controlled
switching regulator for supplying variable voltage to proces-
sor core and memory. The device also incorporates 3 pro-
grammable LDO-regulators for powering I/O, PLLs and
maintaining memory retention in shutdown-mode.
The device is controlled via the PWI open-standard inter-
face. The LP5550 operates cooperatively with PowerWise
technology compatible processors to optimize supply volt-
ages adaptively over process and temperature variations or
dynamically
using
frequency/voltage
pre-characterized
look-up tables.
Features
n
Supports high-efficiency PowerWise Technology
Adaptive Voltage Scaling
n
PWI open standard interface for system power
management
n
Digitally controlled intelligent voltage scaling
n
1 MHz PWM switching frequency
n
Auto or PWI controlled PFM mode transition
n
Internal soft start/startup sequencing.
n
3 programmable LDOs for I/O, PLL, and memory
retention supply generation.
n
Power OK output.
Applications
n
GSM/GPRS/EDGE & UMTS cellular handsets
n
Hand-held radios
n
PDAs
n
Battery powered devices
n
Portable instruments
System Diagram
20154563
FIGURE 1. System Diagram
October 2005
L
2005 National Semiconductor Corporation
DS201545
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LP5550SQ/NOPB | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP5550SQX | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP5550SQX/NOPB | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| LP5551 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PowerWise⑩ Technology Compliant Energy Management Unit |
| LP5551SQ | 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
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